GOV.WALES uses cookies which are essential for the site to work. Non-essential cookies are also used to tailor and improve services. By continuing to use this site, you agree to our use of cookies.
You are here:
Noun, Masculine, Singular
cyflyrrau bioymddygiadol
Lefel deffroad y prif system nerfol.
Efallai y bydd parodrwydd dysgwyr i ymateb i stimwli yn dibynnu, yn rhannol o leiaf, ar eu cyflwr bio-ymddygiadol.